Know Your Environment. Protect Your Health.

1,2,4-Trichlorobenzene

Mccoy Water Supply Corporation

1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND70ND
2021ND30ND
2022ND30ND
2023ND60ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 5 ppb

The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.

EPA Maximum Contaminant
Level (MCL): 70 ppb

The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-05AE12259ND
2018-02-05AE12261ND
2018-02-05AE12257ND
2019-06-05AE69256ND
2019-06-05AE69258ND
2019-11-18AE89581ND
2020-03-26AF04716ND
2020-03-26AF04726ND
2020-03-26AF04728ND
2020-06-10AF14868ND
2020-06-10AF14870ND
2020-07-07AF18407ND
2020-07-07AF18403ND
2021-06-28AF59681ND
2021-09-20AF70457ND
2021-09-20AF70459ND
2022-07-05AG03259ND
2022-07-05AG03261ND
2022-07-05AG03263ND
2023-05-03AG39139ND
2023-05-03AG39145ND
2023-05-03AG39151ND
2023-05-03AG39153ND
2023-09-15AG56654ND
2023-10-02AG58143ND